'''
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License") you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http:#www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
'''
from base.rdf.ModelFactory import ModelFactory
from base.util.iterator.ExtendedIterator import ExtendedIterator

'''
 *
'''

# import java.util.NoSuchElementException;

# import org.apache.jena.util.iterator.*;

'''
 An iterator which returns RDF Statements.

 <p>RDF iterators are standard Java iterators, except that they
 have extras method to return specifically typed objects,
 in this case RDF Statements and have a <CODE>close()</CODE> method
 *   that should be called to free resources if the application does 
 *   not complete the iteration.</p>
'''
from abc import ABC, abstractmethod


# ExtendedIterator<Statement>
class StmtIterator(ABC, ExtendedIterator):
    """
     * Return the next Statement of the iteration.
     *
     * @throws NoSuchElementException
     *             if there are no more to be returned.
     * @return The next Resource from the iteration.
    """

    # param
    # result Statement
    @abstractmethod
    def nextStatement(self):
        pass

    '''
     * Answer a Model of the [remaining] Statements of this iterator, consuming this
     * iterator.
    '''

    # param
    # result default Model
    # @abstractmethod
    def toModel(self):
        m = ModelFactory.createDefaultModel()
        self.forEachRemaining(lambda: m.add)
        return m
